What is pure dyslexia?

Reading and Acquired Dyslexia

This form of alexia is pure in the sense that patients with the disorder often speak and write normally. Recent work suggests that many patients with this disorder exhibit implicit reading in that they access information about written words of which they are unaware.

What is pure word blindness?

Alexia without agraphia (pure word blindness or acquired pure alexia) is the inability to read despite preserved ability to write.

What causes pure word blindness?

Pure alexia typically results from a stroke within the distribution of the left posterior cerebral artery or from a tumor located in the posterior left hemisphere of the brain. In most cases, the left occipital lobe is damaged such that the primary visual cortex is destroyed.

What are the symptoms of alexia?

Alexia means the inability to comprehend written material. The patients' ability to write and spell is intact, but they are unable to spontaneously read, even what they have written seconds ago. Other features of language, such as speech comprehension, are usually intact.

What is a alexia and dyslexia?

Alexia, or acquired dyslexia, refers to a deficit in reading following damage to the brain in previously literate individuals. Alexia is different from developmental dyslexia, which is a developmental deficit in learning to read.

What is dyslexia? - Kelli Sandman-Hurley

Is dyslexia a form of autism?

Although there may be some co-occurrence of autism and dyslexia, these are different disorders and they are not closely linked. Autism is a developmental disorder, while dyslexia is a learning disability, which is a term encompassing various struggles with the learning process.

What does agraphia mean?

Agraphia may be defined as a loss or impairment of the ability to produce written language, caused by brain dysfunction.

What is Gerstmann syndrome?

Gerstmann syndrome is a neuropsychological disorder characterized by the tetrad of agraphia (inability to write), acalculia (inability to perform mathematical calculations), finger agnosia (inability to name, discriminate, or identify fingers), and left-right disorientation (inability to distinguish left from right).

What is Balint's syndrome?

Balint syndrome, as described initially, is a rare disorder associated with difficulties in visual and spatial coordination and is characterized by the three cardinal features: Optic ataxia. Oculomotor apraxia. Simultagnosia.

What is constructional disorder?

Abstract. Constructional apraxia refers to the inability of patients to copy accurately drawings or three-dimensional constructions. It is a common disorder after right parietal stroke, often persisting after initial problems such as visuospatial neglect have resolved.

What causes pure Alexia?

Pure alexia is usually caused by an occlusion of distal (posterior) branches of the left posterior cerebral artery. The resultant damage is believed to interrupt the transfer of neural information from the visual cortex to the language cortex.

How common is alexia?

Alexia is a rare condition in which reading comprehension is nonexistent or significantly limited due to brain injury, damage, or trauma.

Is word blindness a thing?

Word blindness is a rare neurological condition. (The medical term is "alexia without agraphia.") Although a patient can write and understand the spoken word, the patient is unable to read.

What is deep alexia?

Deep Alexia. The defining feature of deep alexia is the production of semantic paralexias when reading aloud. A semantic paralexia is a type of reading error in which the word produced is related in meaning to the written target word.

What is visual alexia?

Inability to recognize written or printed words due to a lesion in the brain. This is a form of visual agnosia.

What is alexia aphasia?

Abstract. Alexia is an acquired disturbance in reading. Alexias that occur after left hemisphere damage typically result from linguistic deficits and may occur as isolated symptoms or as part of an aphasia syndrome.

What is Anton syndrome?

Anton Syndrome is a manifestation of bilateral occipital lobe damage in cortically blind patients. These patients lack insight into their disease and deny their blindness. Classically, patients with this syndrome dismiss the diagnosis and confabulate visions.

What is optic apraxia?

Ocular motor apraxia (OMA) is a neurological disorder that causes problems with voluntary horizontal eye movement. Children with this condition have difficulty moving their eyes in a desired direction. In other words, their saccades (the quick, simultaneous movement of both eyes in the same direction) are abnormal.

What is optic ataxia?

Optic ataxia – impairment of visual control leading to misdirection of the arm to the visual object of interest associated with defective hand orientation and grip formation.

What is Kleine Levin Syndrome?

Definition. Kleine-Levin syndrome is a rare disorder that primarily affects adolescent males (approximately 70 percent of those with Kleine-Levin syndrome are male). It is characterized by recurring but reversible periods of excessive sleep (up to 20 hours per day).

What causes Asomatognosia?

Generally, asomatognosia often arises from damage to the right parietal lobe (Whishaw, 2015). Evidence indicates that damage to the right hemisphere often results from a stroke or pre-existing hemispatial neglect, or inattention to the left visual field (Antoniello, 2016) (Keenan, 2004).

What is the Broca's aphasia?

Broca's dysphasia (also known as Broca's aphasia)

It involves damage to a part of the brain known as Broca's area. Broca's area is responsible for speech production. People with Broca's dysphasia have extreme difficulty forming words and sentences, and may speak with difficulty or not at all.

What is Wernicke aphasia?

Wernicke aphasia is characterized by impaired language comprehension. Despite this impaired comprehension, speech may have a normal rate, rhythm, and grammar. The most common cause of Wernicke's aphasia is an ischemic stroke affecting the posterior temporal lobe of the dominant hemisphere.

Is dyslexia a form of ADHD?

ADHD and dyslexia are separate conditions; however, if a person has both, it means they have the broad executive function impairments (problems focusing, using working memory, etc.), as well as an impairment of the particular skills needed for reading, for example, processing symbols swiftly.

Is dyslexia classified as a mental illness?

Introduction: Dyslexia is a complex neurodevelopemental disorder that affects 5 to 10% of school-age children. This condition consists in a specific learning disability with a neurological origin.